From d7b8dd23a95bf54fd559cddc58ccb1c57806d112 Mon Sep 17 00:00:00 2001
From: Stephen Seo <seo.disparate@gmail.com>
Date: Wed, 22 Jul 2020 15:28:36 +0900
Subject: [PATCH] Impl drawing of white triangles

---
 src/state.cpp | 31 +++++++++++++++++++++++++++----
 src/state.hpp |  5 +++--
 2 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/src/state.cpp b/src/state.cpp
index 1356073..be6e256 100644
--- a/src/state.cpp
+++ b/src/state.cpp
@@ -17,8 +17,11 @@ currentTri_state(CurrentState::NONE)
     ImGui::SFML::Init(window);
     window.setFramerateLimit(60);
 
-    currentTri.setPointCount(3);
-    currentTri.setFillColor(sf::Color::White);
+    pointCircle.setRadius(7.0f);
+    pointCircle.setOrigin(7.0f, 7.0f);
+    pointCircle.setFillColor(sf::Color::White);
+    pointCircle.setOutlineColor(sf::Color::Black);
+    pointCircle.setOutlineThickness(1.0f);
 }
 
 Tri::State::~State() {
@@ -39,12 +42,21 @@ void Tri::State::handle_events() {
         } else if(event.type == sf::Event::MouseButtonPressed) {
             switch(currentTri_state) {
             case CurrentState::NONE:
+                currentTri[0] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
+                currentTri_state = CurrentState::FIRST;
                 break;
             case CurrentState::FIRST:
+                currentTri[1] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
+                currentTri_state = CurrentState::SECOND;
                 break;
             case CurrentState::SECOND:
-                break;
-            case CurrentState::THIRD:
+                currentTri[2] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
+                tris.emplace_back(sf::ConvexShape(3));
+                tris.back().setPoint(0, currentTri[0]);
+                tris.back().setPoint(1, currentTri[1]);
+                tris.back().setPoint(2, currentTri[2]);
+                tris.back().setFillColor(sf::Color::White); // TODO use chosen color
+                currentTri_state = CurrentState::NONE;
                 break;
             }
         }
@@ -64,6 +76,17 @@ void Tri::State::draw() {
     window.clear();
     ImGui::SFML::Render(window);
 
+    // draw tris
+    for(auto& tri : tris) {
+        window.draw(tri);
+    }
+
+    // draw points
+    for(unsigned int i = 0; i < currentTri_state; ++i) {
+        pointCircle.setPosition(currentTri[i]);
+        window.draw(pointCircle);
+    }
+
     window.display();
 }
 
diff --git a/src/state.hpp b/src/state.hpp
index a48328e..b0c43ae 100644
--- a/src/state.hpp
+++ b/src/state.hpp
@@ -25,8 +25,9 @@ namespace Tri {
 
         sf::RenderWindow window;
         std::vector<sf::ConvexShape> tris;
-        sf::ConvexShape currentTri;
-        enum CurrentState { NONE, FIRST, SECOND, THIRD } currentTri_state;
+        sf::Vector2f currentTri[3];
+        enum CurrentState { NONE = 0, FIRST = 1, SECOND = 2} currentTri_state;
+        sf::CircleShape pointCircle;
 
         sf::Event event;